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Oceanic trench

The oceanic trenches are the deepest parts of the ocean floor, typically formed when one tectonic plate slides under another. Major world trenches include:



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1904

... in literature 1904 in music 1904 in sports Events: January 7 - The distress signal[?] "CQD" is established only to be replaced two years later by "SOS." ...

 
 
 
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